Measuring-faucet.



T. E. DAVIS.

MEASURING FAUCET.

APPLICATION FILED MAR. 13. 1315.

1,178,906. Patented Apr. 11,1916.

' faucet embodying my invention, the outernnirnn s'rarns PATENT orrrcn.

moivms'n. DAVIS, or CAMBRIDGE, MASSACHUSETTS.

MEASURING-FAUGET.

Specification of Letters Patent. Patented Apr, 11 1916;

I Application filed March 13,1915. Serial No. 14,274.

To all whom it may concern:

Be it known that I, THOMAS E. DAVIS, a citizen of the United States, and a resident of :Cambridge, .in the county'of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Measuring-Faucets, of which the following is a specification. V I

-This invention relates to faucets for dispensing liquids in measured quantitiesor charges from a reservoir, and it has for its object to provide improved means whereby a faucet of this character may be made temporarily inoperative as a measuring device and adapted to continuously draw liquid from the reservoir until the latter is emptied.

The invention consists in the improvements which I willnow proceed to describe and claim. 7

Of the accompanying drawings forming a part of this specification: Figure 1 represents a longitudinal section of a measuring valve hereinafter referred to being shown in-elevation; Fig. 2 represents a section on line 22 of Fig. 1; Fig. 3 represents a view similar to Fig. 2, showing the inner valve closed; Fig. 4 represents a view similar to Fig. 2, showing the inner valve partly opened to empty the reservoir; Fig. 5 represents a section on line. 5-5 of Fig. 1; Fig. 6 represents a view similar to Fig. 5, showing the outer .valve open; Fig. 7 represents a view similar to Fig. 5, showing the outer valve partly open to empty the reservoir; Fig. 8 represents an end view of the faucet, the cap hereinafter referred to being shown in section; Fig. 9 represents a view similar to Fig. 8, showing a different adjustment; Figs. 10, 11 and 12 represent fragmentary perspective views hereinafter referred to.

The same reference characters indicate the same or similar parts in all the views.

In thedrawings, '12 represents a tubular casing having an inlet port 13 adapted to be connected with a liquid reservoir.

14 and 15 represent tubular valves adapted toturn in said casing, the innervalve 14 being a hollow cylinder open at its ends and closely fitting a cylindrical seat formed by a cylindrical portion of the inner surface of thecasing, while the outer valve 15 is preferably tapering or frusto-conical and closely fits a seat formed vby a tapering portion of said inner surface. 7

. The inner valve 14 is attached by arms 18 to a stem 19 and has a port 17 The outer valve 15 has a head 20, shown by Figs. 10

and 11, and partially shown by Fig. 12, said head being centrally apertured to receive the stem and rigidly attached thereto so that the two valves turn with the stem, the latter being provided with a handle 22. The outer-end'portion of the casing has an air inlet port 23 at its upperside, and a liquid outlet port 24 at its 'lowerlside. The outer valve 15 is hollow from its open inner end to the head 20-and has two diametrically oppositefports 25 and 26 communicating with the hollow portionof said valve. I

. The relative arrangement of the valve and casing ports is such that when the valves are turned to the position indicated by Figs. 1, 2 and 5, the inner valve port 17 registers with the casing inlet port 13, and the outer valve ports 25 and 26 are out of register with the air inlet port 23 and outlet port 24 of the casing, so that the casing receives and retainsa measured charge of liquid.

When the valves are turned to the position shown by Figs. 3 and 6,the inner valve port 17 is out of register with the casing inlet port 13, so that the casing is shut ofi from the reservoir, and the outer valve ports 25,

26, register respectively-with the air inlet port 23 and the casing outlet port 24, so that the charge of liquid is discharged, its place being occupied by air admitted through the port 23. A

The outer end of the casing is enlarged to form an annular fiange=28 (Figs/l, 8, 9, 10 and 11)' surrounding the outer end of the outer valve-and provided with athickened portion 29, one end of which forms a stop shoulder 30, and a thickened portion 29*, one end of which forms a stop shoulder 30 there being a segmental space 31 between said shoulders. The shoulder 30 is relatively narrow and projects partly across the space 31, as shown by Figs. 10 and 11. 32 represents a sleeve mounted to slide endwise on the stem 19 between the head of the outer valveand the handle 22, andprovided with a stop arm 33 which projectsinto the space 31 and is adapted to oscillate between the'shoulders 30 and 30. Said sleeve is pressed inwardly by a spring 34 surrounding the sleeve and hearing at one end on a cap 35 (Fig. 1) attached to the casing, and at its other end on the arm 33, said spring normally holding the arm in position to en-. gage the shoulders 30 and 30 alternately.

The arm 33 projects into a slot 36 (Fig. 12)

formed in the portion of the outer valve 15 which projects outwardly from the head 20, the arm being thus caused to move with the valves. The relative arrangement of the said stop arm and ports is such that when the arm abuts against the stop 30, as shown by full lines in Fig. 8, the inner valve is in the receiving positionshown by Figs. 1 and 2, and the outer valve is in the closed position shown by Fig. 5, so that the casing receives and retains a measured charge of liquid. When the arm abuts against the stop'30 as shown b dotted lines at the right-hand portion 0 Fig. 8, and by full lines in Fig. 11, the inner valve is in the closed position shown by Fig. 3, and the outer valve is in the open position shown by Fig. 6, one of its ports registering with the casing air inlet 23 and the other with the casing outlet 24, so that the measured liquid is discharged, the operation thus far described being substantially the same as described in Letters Patent N 0. 1,094,982, granted to me April 28, 1914. Said patent does not however disclose the stop arm 33 which is movable lengthwise of the valve stem independently of the outer valve, the present invention being embodied in the independently movable stop arm and in a supplemental stop shoulder cooperating therewith, as hereinafter described, to permit the inner valve and the outer valve to stand simultaneously in the open positions shown by Figs. 4 and 7 when it is desired to drain off all the liquid from the reservoir with which the faucet is connected.

30 designates the supplemental stop shoulder, which is arranged, as shown by Figs. 8, 9 and 11, relatively to the normal shoulders 30 and 30, the shoulders 30 and 30 occupying diiferent'lateral positions, as shown by Figs. 10 and 11, so that when the arm 33 is moved outwardly against the pressure ofthe spring 34 from the position shown by Fig. 1, it is enabled to pass by the shoulder 30 and abut against the supplemental shoulder 30, as indicated by dotted lines at the left-hand portions of Figs. 8 and 9, and by full lines in Fig. 10. lVhen the arm is in this position the port 17 of the inner valve is partly open, as shown by Figs. 4 and 10, and the port 25 of the outer valve is also partly open (the air inlet being closed), as shown by Fig. 7, so that liquid is free to flow from the reservoir to the outlet 24 until the reservoir is empty.

The depth of the slot 36 in theouter valve i such that the arm 33, remains in the slot thumb and finger for the purpose of moving the arm outwardly to position to passover the stop 30 and engage the supplemental stop 30.

It will now be seen that when the faucet is in operative condition to alternately receive and discharge liquid, the stop arm 33 is held by the spring 34 between the normal stop shoulders 30, 30 It will also be seen that when the operator desires to empty the reservoir, the arm 33 is pulledoutwardly by the knob 37 far enough to pass overthe stop 30, the valves being then free to be turned to the positions shown by Figs. 4, 7 and 12, and being arrested in said positions by the supplemental stop 30.

To restore the faucet to its operative condition it is only necessary to turnthe valve stem and valves until the arm 33 springs into the space between the normal stops 30 and 30*.

I claim:

1. A measuring faucet comprising a casing having an inlet port and an outlet port oflset from the inlet port, a stem adapted to turn in said casing, inner and outer valves attached to said stem and provided with ports arranged to cooperate respectively with the inlet and outlet ports of the casing, a stop arm movable lengthwise of the valve stem'and loosely engaged with the outer valve to turn therewith, a spring normally holding said arm at the inner extreme of *its movement, and meansfor manually moving the arm outwardly against the stress of the spring, the casing being provided with spaced apart normal stop shoulders arranged to arrest the arm when the valves are at the extremes of their operative movements, and with a supplemental stop shoulder arranged to arrest the .arm with the valves both partially open, when the arm is moved outwardly from its normal position.

2. A measuring faucet comprising a casing having aninlet port and an outlet port offset from the inlet port, a stem adapted to turn in said casing, inner and outer valves attached to said stem and provided with ports arranged tov cooperate respectively with the inlet and outlet ports of the casing, the outer valve being provided with a slot in its outer end portion, a sleeve movable endwise on the valve stem and provided with an arm projecting through and movable in said slot, said sleeve being provided with an exposed handle, and a spring normally holding said sleeve and arm at the inner extreme of their movement, the casing being provided with spaced .apart. normal. stop shoulders arranged to arrest the arm when In testimony whereof I have aflixed my' the valves are at the extremes of their operasignature in presence of two witnesses. tive movements, and with a supplemental stop shoulder arranged to arrest the arm THOMAS E. DAVIS. 5 with the valves both partially open, when Witnesses: I

the arm is moved outwardly from its normal 0. F. BROWN,

position. I P. W. PEZZETTI.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0." 

